What does the code F 20 on a whirlpool washer mean?

The code F20 on a Whirlpool washer indicates a water supply issue, typically meaning that the machine is not filling with water properly. This can be due to a kinked or blocked hose, a closed water supply valve, or issues with the water inlet valve itself. It’s advisable to check the hoses and connections for any obstructions or leaks and ensure that the supply valves are fully open. If the problem persists, further diagnosis may be needed for the inlet valve or control board.